'''for i in range(500,1000,5):
    print("hello world")
    print("第",i,"次打印")'''
list=[1,2,3,4,5]
yuanzu={2,3,4,5,6}
dict1={"name":"zhangsan","age":19}
dict2={"a","b","c"}
for i in dict1:
  print(dict1[i])